This is a firm-fixed-price contract for the repair, or repair and upgrade, of specific circulating fan units (NIINs 015138103 and 014743813). The contractor must be an authorized repair source and provide a Repair Turnaround Time (RTAT) of 286 days after asset receipt, with significant financial penalties for late delivery. Performance requires adherence to strict technical, quality, and cybersecurity requirements, including MIL-STD packaging, mercury-free components, and specific marking standards. The location for the repair services is the contractor's own facility, to which assets will be shipped. Quotes must include detailed pricing, RTAT, and facility CAGE codes, with a minimum 90-day quote expiration.